Should you desire quality security and protection services which of the police or security companies can provide the best service?

1. Prepare and trust your self for your own security, because you are the one primarily responsible for your own security. No one is more interested than yourself.
2. Prevention is better than cure. Analyse what security you need? e.g. if it is residential security you want, search and survey the area where you are most secure.
3. Seek professional guidance from Police and experienced friends
4. Plan your move carefully
5. Police is better option in most cases
6. keep emergency contacts at hand.
7. Devise a emergency response.
8. Train yourself and family in emergency response and weapons handling.
9. Last if you really need private security, check the credentials of security managers of the company.

Security personnel and police have the practical experience of the best of them and that some companies also have staff trained policemen or former army like Blackwater. This depends on the possibilities of the material and human company Sorry do not speak fluent English may not understand your   question well

Depends but For common man Police protect the area commonly (Same for All). Police are protecting only VIPs24/7. being a common man you have to depend on Private companies who can give you professional guard services24/7 but shall cost your valet too much.